Wireless medical telemetry uses radio frequencies to monitor patient physiological parameters from a transmitter worn by the patient to a central monitoring station, allowing freedom of movement. It has advantages like faster diagnosis and reduced hospital visits. However, signal interference from other wireless devices can be an issue. Standards like WMTS and protocols like Bluetooth address this by establishing exclusive frequency bands for medical use and incorporating security features. New wireless technologies continue to enhance patient mobility and provider access to information.

1. Promoting and Protecting your health!

2.  What is Wireless Medical Telemetry ?
Wireless medical telemetry is generally used to monitor patient
physiological parameters (e.g., cardiac signals) over a distance via radio-
frequency (RF) communications between a transmitter worn by the
patient and a central monitoring station.
 Advantage
Allows patient movement without tethering the patient to a bedside
monitor with a hard-wired connection.

3. Electromagnetic spectrum.
 Composed of alternating electric and magnetic fields travelling through
space.
 What differentiates different types of electromagnetic energy is the
wavelength of the fields.
 Wavelengths can vary dramatically, as can their effects. Eg-
X-ray and gamma ray energy have wavelengths (10-10 – 10-14m) s
 Radio waves- longer wavelengths (1 -104m)
Most commonly used for communication purposes.
 Wireless medical telemetry device - a device that transmits
physiological signals via radio frequency (RF) from a transmitter worn by
the patient to a remote receiver.

4. Steps Involved-
1) Amplify the bio-signal.
2) Once amplified, the signal can modulate the RF carrier generated by an
oscillator.
3) The modulated RF signal can then be directly applied to the radiating
antenna. The transmitter is usually powered by a small battery pack
operating at a low voltage by minimizing the electrical hazards and risks to
the patient.
Problems Involved-
Signal interference from other wireless devices.
For example, in many hospitals, there is often a sign not to use cell phones.

5.  Solution- (WMTS)
It is a set of RF bands used solely for wireless medical telemetry
applications.
These frequencies are 608-614 MHz, 1395-1400 MHz, and 1427-1432
MHz.
Hence protected from interference caused by other RF sources such as
wireless phones and wireless local area networks (WLAN).
 This, in turn, allows for faster and more reliable two–way
communication.
 However, the WMTS bands are very narrow, making videos and voice
transmission virtually impossible.

6. The BioRadio 150 operates within a set of RF bands known as the ISM
bands.
 The ISM bands are 902-928 MHz, 2400-2500 MHz, and 5725-5875 MHz.
The BioRadio 150 operates in the 902-928 MHz band.
 Advantage of ISM
Increased bandwidth, making voice and video transmissions possible.
 However, this increased bandwidth is more susceptible to interference
from devices such as wireless telephones and microwave ovens
because they are not exclusive to medical telemetry equipment.

7.  Critical life-sustaining devices, such as pacemakers, can now
be checked by doctors using wireless telemetry. Quicker
diagnosis via telemetry reduces the time a patient spends in
hospital undergoing regular checkups and allows the doctor
to react more rapidly to any patient problems.

8. •This is an Ultrasound
System
•Portable
• Images can be easily and
securely shared for
archival, second opinion, or
remote diagnosis using a
WiFi network, or directly
exported to network
storage. The patient record
is available for
reimbursement

9.  Most recent wireless protocol in the medical space.
 Enables increased patient mobility and gives healthcare
professionals easier access to patient data.
 Designed to allow small groups of up to eight devices
communicate with each other over a Personal Area Network
(PAN).
These ad hoc networks, called piconets, have the potential
to make the seamless integration of all key medical
equipment in hospital rooms and at home possible.
 Patient privacy can easily be designed into products, since
Bluetooth supports many security features, including
password protection and encryption.

10. • Includes
1) High Definition
Implantable Loop
Recorder (HD-ILR)
2) The Personal Diagnostic
Manager
3) Base Station
4) A Monitoring Center

11. Sleuth™ Wireless Electrocardiogram
Monitoring System
•It is small and thin device ( size nearly to that of the smallest
pacemakers).
•The HD-ILR is implanted under the skin.
Working
The Personal Diagnostic Manager is a hand-held, multipurpose
device that automatically retrieves and stores relevant ECG data
from the HD-ILR, securely relays the information to the monitoring
center

12.  Data are collected in two ways:
– Patients who feel faint can press a symptom button which tells
the system to store the patient’s ECG strip during the time of the
fainting spell.
–The system automatically captures and stores the ECG strip
when the patient’s heart rate is above or below physician
programmed limits.
 At the third party Monitoring Center, certified cardiac technicians
review the patient’s ECG data and provide information to the
physician to aid in the diagnosis. Physicians can access this
information via a secure Web portal, and have the reports
faxed, mailed or e-mailed to them as they prefer.

13. •The WristOx2, Model 3150 is a
compact, wireless wrist-worn
monitoring device that accurately
monitors blood-oxygen saturation
(SpO2) levels and pulse rate in
patients
•The lightweight wrist-worn
patient module wirelessly sends
data to a small tabletop
display, improving patient
mobility and reducing bedside
clutter
•Monitoring the screen for breathing disorders such as chronic obstructive
pulmonary disease or sleep disorders such as obstructive sleep apnoea.

14.  The device consists of two components – the patient module
and the display monitor. The pulse oximetry results are
transmitted from the patient module to the tabletop display
that can be placed outside the patient room.
 The patient module can be worn by the patient on the wrist
or forearm or placed in a pocket.
 The wrist unit is able to send a signal over 70 feet through
walls to a nursing pod or main desk.
 The table top display is lightweight , portable and can
operate from either line current or battery. It can be
connected to a nurse call system also.

15. Macro view pathology digital
imaging system
•for anatomical and forensic
investigations.
•capturing images of whole bodies, body
parts and large organ systems. For an even
larger field-of-view, an optional ceiling
mounted wifi connected camera is
available. Images can be
annotated, videos can be recorded, and it
connects to the internet for consultation
with remote pathalogists

16.  Post- Operative Patients
 Maternity Unit
 Post-operative Cesarean Section
 New born Nursery

17.  Use of wireless techniques in medical science will bring
out a sea-change with improvements in patient care
treatment. Since the technology uses the existing
communication infrastructure, it is easy to realize and
implement wireless medical systems without much
effort and cost.
 It will enable patients to move and perform their daily
chores without any worry. Patients who need continuous
monitoring can wear a telemetry device, which
automatically sends vital signals to the hospital.
 There is a need to create an interest in this field and
initiate research activities.

18. THANK YOU